Epson AcuLaser C1900 Service Manual page 148

EPSON AcuLaser C1900/AcuLaser C900
ERROR CODE: 6023 "DEVELOPING RACK ROTATION ERROR"
Detection Timing
When the Toner Cartridge Rack does not turn.
Solution
Electric parts which can cause the trouble:
• Rack motor (M2)
Rack Clutch (CL1)
•
Rack Black Position Detection Sensor (PC4)
•
• Engine Board (PWB-A)
Step Action
1 Check the operation of PC4.
2 Check the operation of M2.
3 Check the operation of CL1.
4 Replace the PWB-A.
Troubleshooting
Table 3-31.
WARNING DIAGRAM
Refer to
Control Signal
p.162 PC4_ON
p.163 CL1_REM
p.163 -
- -
Status Display (AcuLaser C900)
ERROR CODE: 6024 "FUSING ROLLER / WARMING UP ERROR"
ERROR CODE: 6025 "FUSING ROLLER / LOW TEMPERATURE ERROR"
Detection Timing
When 80C is not reached in 100 seconds after start of warming up.
When the fusing roller temperature has dropped and remained below 70C for 10
seconds during standby.
Solution
Electric parts which can cause the trouble:
Fusing Roller Heater Lamp (H1)
•
• Pressure Roller Heater Lamp (H2)
• Thermostat (TS1)
Engine Board (PWB-A)
•
• Power Supply Unit (PU)
Yes/
Step Check Item
No
1 Check the continuity of H1 NO Replace the H1, H2.
and H2.
2 Check the continuity of TS1. NO Replace the TS1.
3 Check to see if the resistance YES Clean TH1 or replace
of TH1 is infinite.
(Between CN18-1 and 2 on
NO Replace the PU.
thermistor side)
Revision B
Table 3-32.
WARNING
DIAGRAM
Remedy
Control Signal
HEATER
the Fuser Unit.
Replace the PWB-A.
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